FDNY Dispatch on UHF ~ Simulcast from VHF 5/1/09

[TR54 239]

8/23/2010 * PL changed , see current post below

Testing period for Ultra High Frequencies of FDNY Dispatch Simulcast for below scanner Frequencies.

Bronx 482.00625

Manhattan 482.10625

Queens 482.03125

Brooklyn 482.01875

Up and running....

[IzzyEng4 427]

Richmond (Staten Island) is up on 482.04375 PL of 77.0 - confirmed from NYCfire.net

Also there are now two Fire Citywides and a new list of EMS dispatch channels also.

[knronald 2]

Richmond (Staten Island) is up on 482.04375 PL of 77.0 - confirmed from NYCfire.net

Also there are now two Fire Citywides and a new list of EMS dispatch channels also.

Just a techniocal correction here. This is Muticast not Simulcast.

Multicast is the same traffic on 2 different frequencies.

Simulcast is the same traffic on the same frequency from multiple locations like Duthcess County 911 and Westchester County DPS F1.

[TAPSJ 30]

Are they still gonna use the old ones??? The 154 or 155??? Just woundering on some nights I get the FDNY in Dtchess on my portable scanner. Thanks ahead of time.

Thomas

[IzzyEng4 427]

Just a techniocal correction here. This is Muticast not Simulcast.

Multicast is the same traffic on 2 different frequencies.

Simulcast is the same traffic on the same frequency from multiple locations like Duthcess County 911 and Westchester County DPS F1.

"Potatoe, Potato"

Are they still gonna use the old ones??? The 154 or 155??? Just woundering on some nights I get the FDNY in Dtchess on my portable scanner. Thanks ahead of time.

Thomas

They will still be using the VHF for a while during the transition. As of right now what I have read there are no mobile UHF radios in the trucks as of yet. Needless to say this project will take a while to to transition over. As for the end result, I believe they will continue to simultaneously broadcast over both radio systems then eventually abandon the VHF entirely.

[PEMO3 523]

482.00625 Bronx Fire 67.0

482.01875 Brooklyn Fire 69.3

482.03125 Queens Fire 71.9

482.04375 Richmond Fire 77.0

482.10625 Manhattan Fire 74.4

482.16875 EMS Citywide 1 79.7

482.21875 EMS Citywide 2 82.5

482.23125 Fire Citywide 1 85.4

482.24375 EMS Richmond 91.5

Bronx North / Queens East ?

482.30625 88.5

482.35625 94.8

482.50625 EMS Brooklyn Central 123.0

482.51875 EMS Queens West 97.4

482.75625 EMS Manhattan North 100.0

482.76875 EMS Bronx South 114.8

482.98125 EMS Manhattan Central 103.5

483.21875 EMS Manhattan South 107.2

483.28125 EMS Brooklyn North 118.8

483.29375 EMS Brooklyn South 127.3

483.38125 Fire Citywide 2 123.0

[TR54 239]

Please note the below PL changes

Queens 141.3

Manhattan 146.2

Staten Island 151.4

Brooklyn 136.5

Bronx 131.8

Citywide 131.8

[PEMO3 523]

Please note the below PL changes

Queens 141.3

Manhattan 146.2

Staten Island 151.4

Brooklyn 136.5

Bronx 131.8

Citywide 131.8

Are those PL changes on the EMS or Fire side?

[FDNY 10-75 640]

Those are for fire, but eventually there are supposed to be separate transmit/receive PLs for each frequency.

Edited August 24, 2010 by FDNY 10-75

[Alpinerunner 61]

Interesting. Can someone enlighten me as to the reason for the change? Can UHF penetrate buildings better? Better sound quality?

[tbendick 27]

EMS also changed PL's on the new UHF channels.

[IzzyEng4 427]

I think the main reason was that all three city agencies (FDNY, FDNY*EMS and NYPD) are all on teh UHF band now for Interops. Or at least that was one of the plans.

[brian209 0]

Interesting. Can someone enlighten me as to the reason for the change? Can UHF penetrate buildings better? Better sound quality?

I do not know why they made the decision, but in general, UHF is known for better penetration into buildings. In addition, the antenna size for hand held portables is a convenient size. While there are portables on VHF-High (150 MHz) that are on the market that are only slightly longer, that antenna is less efficient than the same size UHF antenna. 800 MHz (and 700 MHz) equipment have even smaller antennas, but those systems are known for poor building penetration in addition to limited propogation.

Brian